Getting an error message after replacing my old fan with a Noctua:

[Sputniq]

Ok i posted previeviously regarding the noise my PSU was making, but it turns out it was a connector issue. Apparently I had too many things running on the socket wall. After unpluging everthing and connecting the server directly, the noise is gone but I now have a new problem. the error message says: Lower Critical - going low - Assertion
and then again Lower non-recoverable - going low - Assertion please see the attached image.
The only changes I have made to the system since is a new CPU cooler from noctua. The fan is not stable and runs in waves, it goes up and then down over and over again.
My system specs are as follow:

CPU: AMD EPYC 7551 32 core.
CPU COOLER: Noctua NH-U14S TR4-SP3 (165 mm) (6422729)
RAM: 256 Gigs ECC
Motherboard: Supermicro H11SSL-i
PSU: Be quiet 750 Pure Power 12M
LSI 9207-8i 6Gbs SAS HBA for my trunas
Mellanox MCX314A-BCCT 40Gb
And a bunch of PCIe for GPU nvme and so on.
Please take a look that the error screenshot.

[Dutch_Master]

Does your new fan has 3 or 4 wires? And the fan header, how many pins does it have?

[Sputniq]

the new Fan is the Noctua NH-U14S TR4-SP3 (165 mm) (6422729) which has a 4 pin connector, Ground
+12V Power
Tachometer (RPM Sensor)
PWM Control

[twin_savage]

This is because you have the lower fan threshold set ~375-400RPM and when the Noctua goes below that IPMI logs the error. If you set your fan lower critical threshold lower you’ll stop getting those messages.